Aesthetic: Pixelated image for first, inconsistent aesthetic-solid background, textured background, and screen grab
Legible on larger scale
type looks fine to me

Structure: visual priority is image
foreground: text. background: image

Consider how inbetween steps are gonna work

technical challenges: How is stuff gonna work in between? lots of position shifting (ie browser is top left and mobile is bottom right)

image resolution!
fonts are fine